Dipper construction



June 13, 1933.

E. 5. BLACK DIPPER CONSTRUCTION Filed Aug. 25, 1932 2 Sheets-Sheet lJune 13, 1933. 3 BLACK 1,914,104

DIPPER CONSTRUCTION Filed Aug. 25, 1952 2 Sheets-Sheet 2 A 55 :\v M m-]35 W 17 fiver-42 071 P tion 14 constitute the improved Patented June13, 1933 UNITED STATES PATENT OFFICE EDWARD 8. BLACK, OF CHICAGO,ILLINOIS, ASSIGNOB '10 PETTIBONE MULLIKEN COMPANY, A. CORPORATION OFDELAWARE DIPPEB CONSTRUCTION The invention relates to dippers, orbuckets, of the type shown and described 1n my co-pendin application,Senal N0. 618,389, filed gune 20, 1932, d1ppers or buckets of this typebeing used in excavatlng or similar work.

The primary object of the mventlon 1s to rovide im roved frontconstruction for a abricated 'pper or bucket of the character described.

Another object is to provide. a dipper 0r bucket in which portions ofthe front construction may be assembled or dls-assembled withcomparative ease and, preferably, wlthout inserting or removing .r1vetsor other relatively permanent fastening devlces.

Other objects and advantages w1ll become apparent as the followingdeta1led description progresses, reference belng had to the accompanyingdrawings, 'wherem- Figure 1 is a view in side elevatlon of a dipper orbucket which embodies the mvention.

Figure 2 is a fragmentary face view of the di per front.

' igure 3 is a view loolnng at the left hand end of the improved dipperas it is vlewed m Figure 1, Figure 3 being partly in sectlon toillustrate certain details of construction, and

Figure 4 is an enlarged fragmentary section taken on line 4-4 of FigureReferring to the drawings wherein a 1preferred embodiment of theinvention s 1 ustrated, the reference character 5 designates generallythe bod portion of the improved dipper, which bo y portion may be of anysultable or preferred construction. The side walls of the body portion 5are designated by the reference character 6 and terminate short of thefront or digging wall of the d1pper.

In the particular construction illustrated, the improved dipper frontcomprises a main body section 13 and an upper lip section 14 which isinterlocked with the body section 13 and provides seats for a pluralityof dipper teeth .1 5. Intermediate the seats for the dipper teeth 15,the upper lip section 14 is pro vided with cutting edge portions 16.

The body section 13 and the upper li secipper rent,

in this instance, and are of general trou h shape as shown in Figure 3,the main body section 13 having rearwardly extending side plates or wins 12 which are secured to the Slde walls 6 by rivets 7 or theequivalent. The upper lip section 14 is provided with rearwardlyextending wings or side plates 14?), the side plates 14b being formedintegral with the front wall 14a of the upper lip section 14.

A rib 17 preferably formed inte ral with the main body section 13 isprovided with .an upwardly extending flange 20. The rib 17 and theflange 20 extend continuously across the front surface of the main bodysection 13 and, in this instance, a little more than half way across theside plates 12 of the body section 13. (See Figures land 3).

' The upper edge of the body section 13 is provided with an upwardlyextending flange 21 ofi'set forwardly from the rear face 22 of the bodysection.

The flange 21 extends across the entire front surface of the bodysection 13 and more than half way back along the outer surfaces of theside plates 12. 1

The outer or front surface of the body section 13 is provided, betweenthe rib 17 and the flange 21, with a series of spaced, substantiallyparallel ribs 23 which extend lengthwise of the dipper front, these ribsbeing shown as extending at their outer faces, designated as 24,substantially flush with the outer faceof the flange 21, but short ofthe rear surface of the flange 20.

The lip section 14 and the body section 13 are preferably provided ascastings. The lip section 14 is formed of a cored body portion 26 whichextends along the upper edge .portion of the body section 13 and aroundthe sides thereof as shown (Figures 3 and 4), the body portion 26 beingprovided with an integral skirt portion 28 which terminates at its loweredge in a de ending rear wardly offset flange 29 adapte to enter thespace between t e flange 20 and the outer surface of the body section13. (See Figure 4).

The body portion 26 is provided at its rear edge with a depending flange30 adapted to hook over the flange 21 on the body section 13 andinterlocked therewith as shown, the rear face 31 of the flange 30 beingsubstantially flush with the rear or inner surface 22 of the bodysection 13. It inner or rear surface. of the skirt 28 abuts a ainst thesurfaces 24 of the ribs 23 with w hich the body section 13 is provided.

The body provided with spaced toothed bases 33 formed integraltherewith. The bases 33 are cored out as represented at 34 and present,at their outer ends, sockets 35 to receive the shanks 36 of the teeth15.

The lip section 14 is assembled with the body section 13 as illustratedin the drawings so that the flange 30 interlocks with the flange 21 andthe flange 29 extends, preferably, by a relatively close fit, into thespace between the flange and the outer or front surface of the bodysection 13.

The sections 13 and 14 are secured, preferably, to each other as bymeans of bolts 44 WhlCh pass through the ribs 23 and the front wall 140of the section 14. The bolts 44 prevent longitudinal displacement of thesections 13 and 14 relative to each other.

It will be noted that the flanges 20, 29, 21 and extend from one lateraledge of the upper lip section 14 to the opposite lateral edge thereof.These lateral edges are identified by the reference character 140. Atthe upper ends of the lateral edges 14c, lugs 14d formed integral withthe upper section 14 roject into notches ower section 13. (See Figures 1and 3.)

It will be readily understood that the improved construction possesses ahigh degree of strength and is relatively light in weight. It will alsobe understood that the im roved construction provides for the ready sustitution of a new lip section for a worn one and that, when bolts 44are employed to secure the sections to each other, it is not necessaryto remove rivets or other relatively permanent fastening devices beforethe lip section may be dis-assembled from the lower section 13.

While I have illustrated and described certain constructionsconstituting embodiments of my invention, I do not wish to be understoodas intending to limit my invention thereto, as the constructions shownmay be variously modified and altered and the invention embodied inother forms of structure without departing from the spirit of myinvention.

What I regard as new, cure by Letters Patent, is:

1. A front section of a dipper comprising a body section, and a separateupper section, said sections having a plurality of sets of interlockingflanges extending substantially from one lateral edge of said uppersection to the o posite lateral edge thereof.

2. A ront construction of a dipper com- 05 prising a body section and aseparate upper and desire to sewill be noted that the portion 26 of thelip section 14 is 13d provided in thesection, said body section beingprovided below its upper edge with an upwardly extending projection andsaid u per section la ping a rearwardly facing sur ace of said bosection at the upper edge of the latter an also lapping the rear surfaceof said projection, sai projection extending substantially from onelateral edge of said upper section to the opposite lateral edge thereof.

3. A front construction of a dipper comprising a body section and aseparate upper section, said body section having an upwardly extendinprojection adjacent its upper ed e and 0 set toward the front side ofsaid b0 y section and provided below its upper edge with an upwardlyextending projection, said u per section lapping the rear surfaces ofsai projections said projections extendmg substantially from one lateraledge of said upper section to the opposite lateral edge thereof.

4. A front section of a dipper comprising a body section, and a separateupper section, said sections having a plurality of sets of interlockingprojections located at different elevations and extending substantiallyfrom one lateral edge of said upper section to the opposite lateral edgethereof.

5. A front section of a dipper comprising a trough-shaped body section,and a separate trough-shaped upper section, said sections having alurality of sets of interlocking projections ocated at differentelevations and extending substantially from one lateral edge of saidupper section to the opposite lateral edge thereof.

6. A front construction of a dipper comprising a body section, and aseparate upper section, said upper section having a portion which laps arearwardly facing ortion of 105 said body section and extends sustantially from one lateral edge of said upper section to theoppositelateral edgethereof, said upper section having a portionextending opposite said firstreferred-to portion at thefront no side ofsaid body section de ndin to a oint below the lower edge ot saidrst-reerred-to portion and extendin continuously across the front faceof said body portion.

7. A front construction of a dipper comprising a body section, aseparate upper section, said upper section having a portion which laps arearwardly facing portion of said body section and extends substantiallyfrom one lateral edge of said upper section to the opposite lateral edgethereof, said upper section having a portion extending opposite saidfirst-referred-to portion at the front side of said body sectiondepending to a 5 point below the lower edge of said first-referred-toportion and extending continuously across the front face of said bodyportion, and means extending through said last-re ferred-to portion ofsaid upper section and f said body section for securing the uppersection in place.

8. A front construction of a dipper comprising a trough-shaped bodysection, a separate upper trough-shaped section, said upper sectionhaving a portion lapping a 1:881" wardly facing surface of said bodysection and extending upwardly therebeyond, and means for preventingdeflection of end portions of said upper section comprising grooves inone of said sections into which portions of the other of said sectionsextend, said grooves opening in the direction of the planes of the sidewalls of said body section.

.9. A front construction of a dipper comprising a trough-shaped bodysection, a separate upper trough-shaped section, said upper sectionhaving a portion lapping a rearwardly facing surface of said bodysection and extending upwardly therebeyond and substantially from onelateral edge of said upper section to the opposite lateral edge thereof,and means for preventing deflection of end portions of said uppersection comprising grooves in one of said sections into which portionsof the other of said sections extend, said grooves opening in thedirection of the planes of the side walls of said body section.

10. A front section of a dipper comprising a body section, a separateupper section, said sections having a plurality of sets of interlockingprojections located at different elevations and extending substantiallyfrom one lateral edge of said upper section to the opposite lateral edgethereof, said upper section extending above said sets of projections,and means for preventing deflection of the ends of said upper section atits upper portion in either of opposite directions comprisinginterlocking portions formed of parts of said sections.

11. A front construction of a dipper comprising a trough-shaped bodysection, a separate upper trough-shaped section, said sections having aplurality of sets of interlocking projections located at differentelevations and extending substantially from one lateral edge of saidupper section to the opposite lateral edge thereof, said upper sectionextending above said sets of projections, and means for preventingdeflection of the ends of said upper section at its upper portion ineither of opposite directions comprising grooves in one of said sectionsinto which portions of the other of said sections extend, said groovesopening in the direction of the planes of the side walls of said bodyportion.

12. A front section of a trough-shaped upper section, said sectionshaving a plurality of sets of interlocking flanges extendingsubstantially from one lateral edge of said upper section to theopposite lateral edge thereof.

13. A front construction of a dipper comdipper comprising atrough-shaped body section, and a separate prising a body section and aseparate upper section, said body section being provided be low itsupper edge with an upwardly extendmg projection and said upper sectionlapping a rearwardly facing surface of said body section at the upperedge lapping the rear surface of said projection, said pro ection andthe portion of said upper section lapping the rearwardly facin surfaceof said body section extending su stantially from one lateral edge ofsaid upper section to the opposite lateral edge thereof.

14:. A front construction of a dipper comprising a trough-shaped bodysection and a separate trough-shaped upper section, said body sectionhaving an upwardly extending PI'OJBCtlOIl adjacent its upper edge andoffset toward the front side of said body section and provided below itsupper edge with an upwardly extending projection, said upper sectionlapping the rear surfaces of said projections, said projectionsextending substantially from one lateral edge of said upper sectlon tothe opposite lateral edge thereof.

In witness whereof, I have hereunto subscribed my name this 18th day ofAugust,

EDWARD S. BLACK.

of the latter and also

